import { isDevMode, ADMIN_SUPER_NPUB } from "../config.js";

const noop = () => {};

const FALLBACK_PROFILE_AVATAR = "assets/svg/default-profile.svg";
const ADMIN_DM_IMAGE_URL =
  "https://beta.bitvid.network/assets/jpg/video-thumbnail-fallback.jpg";
const BITVID_WEBSITE_URL = "https://bitvid.network/";
const NWC_URI_SCHEME = "nostr+walletconnect://";
const MAX_WALLET_DEFAULT_ZAP = 100000000;

const SERVICE_CONTRACT = [
  {
    key: "normalizeHexPubkey",
    type: "function",
    description:
      "Normalizes a provided pubkey (hex or npub) so profile lookups are stable.",
  },
  {
    key: "safeEncodeNpub",
    type: "function",
    description:
      "Encodes a hex pubkey as an npub for display. Expected to be resilient to bad input.",
  },
  {
    key: "safeDecodeNpub",
    type: "function",
    description:
      "Decodes an npub back to its hex form. Should return null/undefined for invalid payloads.",
  },
  {
    key: "truncateMiddle",
    type: "function",
    description:
      "Utility used for shortening long identifiers in the modal without losing context.",
  },
  {
    key: "getProfileCacheEntry",
    type: "function",
    description:
      "Returns the cached profile metadata for a normalized pubkey (if available).",
  },
  {
    key: "batchFetchProfiles",
    type: "function",
    description:
      "Fetches and caches profile metadata for a set of pubkeys so the modal can hydrate avatars/names in bulk.",
  },
  {
    key: "switchProfile",
    type: "function",
    description:
      "Switches the active application profile to the provided pubkey and updates state accordingly.",
  },
  {
    key: "relayManager",
    type: "object",
    description:
      "Shared relay manager instance responsible for the user\'s relay configuration.",
  },
  {
    key: "userBlocks",
    type: "object",
    description: "User blocks helper used to read and mutate the local block list.",
  },
  {
    key: "nostrClient",
    type: "object",
    description: "Reference to the nostr client powering subscriptions and profile fetches.",
  },
  {
    key: "accessControl",
    type: "object",
    description:
      "Access control module required for admin list permission checks and updates.",
  },
  {
    key: "getCurrentUserNpub",
    type: "function",
    description: "Returns the active user\'s npub so UI actions can target the correct actor.",
  },
  {
    key: "getActiveNwcSettings",
    type: "function",
    description:
      "Reads the active Nostr Wallet Connect settings (uri/default zap) for the logged in profile.",
  },
  {
    key: "updateActiveNwcSettings",
    type: "function",
    description: "Persists updates to the active wallet settings and returns the new state.",
  },
  {
    key: "createDefaultNwcSettings",
    type: "function",
    description: "Creates a baseline wallet settings object when none exists.",
  },
  {
    key: "ensureWallet",
    type: "function",
    description:
      "Guarantees a wallet connection exists before issuing wallet related operations (connect/test).",
  },
  {
    key: "loadVideos",
    type: "function",
    description: "Triggers a video reload so UI reflects profile or permission changes.",
  },
  {
    key: "sendAdminListNotification",
    type: "function",
    description:
      "Sends an administrative notification when moderators/whitelist/blacklist entries change.",
    optional: true,
  },
  {
    key: "describeAdminError",
    type: "function",
    description:
      "Maps low-level admin errors to readable copy for surfaced error messages.",
  },
  {
    key: "describeNotificationError",
    type: "function",
    description:
      "Maps notification send errors to human readable descriptions for toast/banner messaging.",
  },
  {
    key: "onAccessControlUpdated",
    type: "function",
    description:
      "Callback invoked after access control mutations so the app can refresh dependent UI.",
  },
];

const STATE_CONTRACT = [
  {
    key: "getSavedProfiles",
    type: "function",
    description:
      "Returns the saved profile entries that populate the account switcher UI.",
    fallback: (internal) => () => internal.savedProfiles.slice(),
  },
  {
    key: "setSavedProfiles",
    type: "function",
    description:
      "Replaces the saved profile entries and returns the newly stored collection.",
    fallback: (internal) => (profiles = []) => {
      internal.savedProfiles = Array.isArray(profiles)
        ? profiles.slice()
        : [];
      return internal.savedProfiles;
    },
  },
  {
    key: "persistSavedProfiles",
    type: "function",
    description:
      "Persists the saved profile collection (and optionally the active profile) to storage.",
    fallback: () => noop,
  },
  {
    key: "getActivePubkey",
    type: "function",
    description: "Returns the currently active profile pubkey.",
    fallback: (internal) => () => internal.activePubkey,
  },
  {
    key: "setActivePubkey",
    type: "function",
    description: "Updates the active profile pubkey and returns the stored value.",
    fallback: (internal) => (pubkey) => {
      if (typeof pubkey === "string") {
        const trimmed = pubkey.trim();
        internal.activePubkey = trimmed ? trimmed : null;
      } else {
        internal.activePubkey = null;
      }
      return internal.activePubkey;
    },
  },
  {
    key: "getCachedSelection",
    type: "function",
    description:
      "Reads the cached profile selection used to restore switcher focus after reloads.",
    fallback: (internal) => () => internal.cachedSelection,
  },
  {
    key: "setCachedSelection",
    type: "function",
    description:
      "Caches the last selected profile identifier and returns the stored value.",
    fallback: (internal) => (value) => {
      if (typeof value === "string") {
        const trimmed = value.trim();
        internal.cachedSelection = trimmed || null;
      } else {
        internal.cachedSelection = null;
      }
      return internal.cachedSelection;
    },
  },
  {
    key: "getActivePane",
    type: "function",
    description: "Returns the identifier for the currently visible profile modal pane.",
    fallback: (internal) => () => internal.activePane,
  },
  {
    key: "setActivePane",
    type: "function",
    description: "Updates the active pane identifier and returns the stored value.",
    fallback: (internal) => (pane) => {
      if (typeof pane === "string") {
        const trimmed = pane.trim().toLowerCase();
        internal.activePane = trimmed || "account";
      } else {
        internal.activePane = "account";
      }
      return internal.activePane;
    },
  },
  {
    key: "getWalletBusy",
    type: "function",
    description:
      "Indicates whether wallet-related actions are currently in-flight (disables UI as needed).",
    fallback: (internal) => () => internal.walletBusy,
  },
  {
    key: "setWalletBusy",
    type: "function",
    description: "Updates the wallet busy flag and returns the new boolean state.",
    fallback: (internal) => (isBusy) => {
      internal.walletBusy = Boolean(isBusy);
      return internal.walletBusy;
    },
  },
];

function buildServicesContract(services = {}) {
  const resolved = {};
  const missing = [];

  SERVICE_CONTRACT.forEach((definition) => {
    const value = services[definition.key];
    if (value == null) {
      if (definition.optional) {
        return;
      }
      missing.push(`- ${definition.key}: ${definition.description}`);
      return;
    }

    if (definition.type === "function" && typeof value !== "function") {
      throw new TypeError(
        `Expected service \"${definition.key}\" to be a function. Received ${typeof value}.`,
      );
    }
    if (definition.type === "object" && (typeof value !== "object" || value === null)) {
      throw new TypeError(
        `Expected service \"${definition.key}\" to be an object. Received ${typeof value}.`,
      );
    }

    resolved[definition.key] = value;
  });

  if (missing.length) {
    throw new Error(
      [
        "[ProfileModalController] Missing required services for profile modal controller:",
        ...missing,
      ].join("\n"),
    );
  }

  return Object.freeze({ ...services, ...resolved });
}

function buildStateContract(state = {}, internalState) {
  const resolved = {};

  STATE_CONTRACT.forEach((definition) => {
    const value = state[definition.key];
    if (typeof value === definition.type) {
      resolved[definition.key] = value;
      return;
    }

    if (definition.fallback) {
      const fallback = definition.fallback(internalState);
      if (typeof fallback === definition.type) {
        resolved[definition.key] = fallback;
        return;
      }
    }

    throw new Error(
      `[ProfileModalController] Missing state handler \"${definition.key}\" (${definition.description}).`,
    );
  });

  return { ...state, ...resolved };
}

export class ProfileModalController {
  constructor(options = {}) {
    const {
      modalContainer = null,
      removeTrackingScripts = noop,
      createWatchHistoryRenderer = null,
      setGlobalModalState = noop,
      showError = noop,
      showSuccess = noop,
      showStatus = noop,
      callbacks = {},
      services = {},
      state = {},
    } = options;

    this.modalContainer = modalContainer;
    this.removeTrackingScripts = removeTrackingScripts;
    this.createWatchHistoryRenderer = createWatchHistoryRenderer;
    this.setGlobalModalState = setGlobalModalState;
    this.showError = showError;
    this.showSuccess = showSuccess;
    this.showStatus = showStatus;

    this.internalState = {
      savedProfiles: [],
      activePubkey: null,
      cachedSelection: null,
      activePane: "account",
      walletBusy: false,
    };

    this.services = buildServicesContract(services);
    this.state = buildStateContract(state, this.internalState);

    this.normalizeHexPubkey = this.services.normalizeHexPubkey;
    this.safeEncodeNpub = this.services.safeEncodeNpub;
    this.safeDecodeNpub = this.services.safeDecodeNpub;
    this.truncateMiddle = this.services.truncateMiddle;
    this.sendAdminListNotificationService =
      typeof this.services.sendAdminListNotification === "function"
        ? this.services.sendAdminListNotification
        : null;
    this.describeAdminErrorService = this.services.describeAdminError;
    this.describeNotificationErrorService =
      this.services.describeNotificationError;

    this.callbacks = {
      onClose: callbacks.onClose || noop,
      onLogout: callbacks.onLogout || noop,
      onChannelLink: callbacks.onChannelLink || noop,
      onAddAccount: callbacks.onAddAccount || noop,
      onSelectPane: callbacks.onSelectPane || noop,
      onPaneShown: callbacks.onPaneShown || noop,
      onAddRelay: callbacks.onAddRelay || noop,
      onRestoreRelays: callbacks.onRestoreRelays || noop,
      onAddBlocked: callbacks.onAddBlocked || noop,
      onWalletSave: callbacks.onWalletSave || noop,
      onWalletTest: callbacks.onWalletTest || noop,
      onWalletDisconnect: callbacks.onWalletDisconnect || noop,
      onAdminAddModerator: callbacks.onAdminAddModerator || noop,
      onAdminAddWhitelist: callbacks.onAdminAddWhitelist || noop,
      onAdminAddBlacklist: callbacks.onAdminAddBlacklist || noop,
      onAdminRemoveModerator: callbacks.onAdminRemoveModerator || noop,
      onAdminRemoveWhitelist: callbacks.onAdminRemoveWhitelist || noop,
      onAdminRemoveBlacklist: callbacks.onAdminRemoveBlacklist || noop,
      onHistoryReady: callbacks.onHistoryReady || noop,
    };

    this.profileModal = null;
    this.profileModalAvatar = null;
    this.profileModalName = null;
    this.profileModalNpub = null;
    this.profileSwitcherList = null;
    this.profileAvatar = null;
    this.closeButton = null;
    this.logoutButton = null;
    this.channelLink = null;
    this.addAccountButton = null;
    this.navButtons = {
      account: null,
      relays: null,
      wallet: null,
      blocked: null,
      history: null,
      admin: null,
    };
    this.panes = {
      account: null,
      relays: null,
      wallet: null,
      blocked: null,
      history: null,
      admin: null,
    };
    this.profileRelayList = null;
    this.profileRelayInput = null;
    this.profileAddRelayBtn = null;
    this.profileRestoreRelaysBtn = null;
    this.profileBlockedList = null;
    this.profileBlockedEmpty = null;
    this.profileBlockedInput = null;
    this.profileAddBlockedBtn = null;
    this.walletUriInput = null;
    this.walletDefaultZapInput = null;
    this.walletSaveButton = null;
    this.walletTestButton = null;
    this.walletDisconnectButton = null;
    this.profileWalletStatusText = null;
    this.adminModeratorsSection = null;
    this.adminModeratorsEmpty = null;
    this.adminModeratorList = null;
    this.adminAddModeratorButton = null;
    this.adminModeratorInput = null;
    this.adminWhitelistSection = null;
    this.adminWhitelistEmpty = null;
    this.adminWhitelistList = null;
    this.adminAddWhitelistButton = null;
    this.adminWhitelistInput = null;
    this.adminBlacklistSection = null;
    this.adminBlacklistEmpty = null;
    this.adminBlacklistList = null;
    this.adminAddBlacklistButton = null;
    this.adminBlacklistInput = null;

    this.profileHistoryRenderer = null;
    this.boundProfileHistoryVisibility = null;
    this.boundKeydown = null;
    this.boundFocusIn = null;
    this.focusableElements = [];
    this.profileSwitcherSelectionPubkey = null;
    this.setActivePane(this.getActivePane());
    this.setWalletPaneBusy(this.isWalletBusy());
    this.adminEmptyMessages = new Map();
  }

  async load() {
    if (!(this.modalContainer instanceof HTMLElement)) {
      throw new Error("profile modal container missing");
    }

    const response = await fetch("components/profile-modal.html");
    if (!response.ok) {
      throw new Error(`Failed to load profile modal HTML (${response.status})`);
    }

    const html = await response.text();
    const template = document.createElement("template");
    template.innerHTML = html;
    this.removeTrackingScripts(template.content);

    const modalRoot = template.content.querySelector("#profileModal");
    if (!(modalRoot instanceof HTMLElement)) {
      throw new Error("profile modal markup missing expected #profileModal root");
    }

    this.modalContainer.appendChild(template.content);
    this.profileModal = modalRoot;

    this.cacheDomReferences();
    this.registerEventListeners();
    this.updateFocusTrap();
    this.callbacks.onPaneShown(this.getActivePane(), { controller: this });

    return true;
  }

  cacheDomReferences() {
    this.profileModal = document.getElementById("profileModal") || null;
    this.closeButton = document.getElementById("closeProfileModal") || null;
    this.logoutButton = document.getElementById("profileLogoutBtn") || null;
    this.channelLink = document.getElementById("profileChannelLink") || null;
    this.addAccountButton =
      document.getElementById("profileAddAccountBtn") || null;
    this.profileModalAvatar =
      document.getElementById("profileModalAvatar") || null;
    this.profileModalName =
      document.getElementById("profileModalName") || null;
    this.profileModalNpub =
      document.getElementById("profileModalNpub") || null;
    this.profileSwitcherList =
      document.getElementById("profileSwitcherList") || null;

    const topLevelProfileAvatar =
      document.getElementById("profileAvatar") || null;
    if (topLevelProfileAvatar) {
      this.profileAvatar = topLevelProfileAvatar;
    }

    this.navButtons.account =
      document.getElementById("profileNavAccount") || null;
    this.navButtons.relays = document.getElementById("profileNavRelays") || null;
    this.navButtons.wallet = document.getElementById("profileNavWallet") || null;
    this.navButtons.blocked =
      document.getElementById("profileNavBlocked") || null;
    this.navButtons.history =
      document.getElementById("profileNavHistory") || null;
    this.navButtons.admin = document.getElementById("profileNavAdmin") || null;

    this.panes.account = document.getElementById("profilePaneAccount") || null;
    this.panes.relays = document.getElementById("profilePaneRelays") || null;
    this.panes.wallet = document.getElementById("profilePaneWallet") || null;
    this.panes.blocked = document.getElementById("profilePaneBlocked") || null;
    this.panes.history = document.getElementById("profilePaneHistory") || null;
    this.panes.admin = document.getElementById("profilePaneAdmin") || null;

    this.profileRelayList = document.getElementById("relayList") || null;
    this.profileRelayInput = document.getElementById("relayInput") || null;
    this.profileAddRelayBtn =
      document.getElementById("addRelayBtn") || null;
    this.profileRestoreRelaysBtn =
      document.getElementById("restoreRelaysBtn") || null;

    this.profileBlockedList =
      document.getElementById("blockedList") || null;
    this.profileBlockedEmpty =
      document.getElementById("blockedEmpty") || null;
    this.profileBlockedInput =
      document.getElementById("blockedInput") || null;
    this.profileAddBlockedBtn =
      document.getElementById("addBlockedBtn") || null;

    this.walletUriInput = document.getElementById("profileWalletUri") || null;
    this.walletDefaultZapInput =
      document.getElementById("profileWalletDefaultZap") || null;
    this.walletSaveButton =
      document.getElementById("profileWalletSave") || null;
    this.walletTestButton =
      document.getElementById("profileWalletTest") || null;
    this.walletDisconnectButton =
      document.getElementById("profileWalletDisconnect") || null;
    this.profileWalletStatusText =
      document.getElementById("profileWalletStatus") || null;

    this.adminModeratorsSection =
      document.getElementById("adminModeratorsSection") || null;
    this.adminModeratorsEmpty =
      document.getElementById("adminModeratorsEmpty") || null;
    this.adminModeratorList =
      document.getElementById("adminModeratorList") || null;
    this.adminAddModeratorButton =
      document.getElementById("adminAddModeratorBtn") || null;
    this.adminModeratorInput =
      document.getElementById("adminModeratorInput") || null;
    this.adminWhitelistSection =
      document.getElementById("adminWhitelistSection") || null;
    this.adminWhitelistEmpty =
      document.getElementById("adminWhitelistEmpty") || null;
    this.adminWhitelistList =
      document.getElementById("adminWhitelistList") || null;
    this.adminAddWhitelistButton =
      document.getElementById("adminAddWhitelistBtn") || null;
    this.adminWhitelistInput =
      document.getElementById("adminWhitelistInput") || null;
    this.adminBlacklistSection =
      document.getElementById("adminBlacklistSection") || null;
    this.adminBlacklistEmpty =
      document.getElementById("adminBlacklistEmpty") || null;
    this.adminBlacklistList =
      document.getElementById("adminBlacklistList") || null;
    this.adminAddBlacklistButton =
      document.getElementById("adminAddBlacklistBtn") || null;
    this.adminBlacklistInput =
      document.getElementById("adminBlacklistInput") || null;

    if (!this.profileHistoryRenderer && this.createWatchHistoryRenderer) {
      this.profileHistoryRenderer = this.createWatchHistoryRenderer({
        viewSelector: "#profilePaneHistory",
        gridSelector: "#profileHistoryGrid",
        loadingSelector: "#profileHistoryLoading",
        statusSelector: "#profileHistoryStatus",
        emptySelector: "#profileHistoryEmpty",
        sentinelSelector: "#profileHistorySentinel",
        scrollContainerSelector: "#profileHistoryScroll",
        errorBannerSelector: "#profileHistoryError",
        clearButtonSelector: "#profileHistoryClear",
        republishButtonSelector: "#profileHistoryRepublish",
        featureBannerSelector: "#profileHistoryFeatureBanner",
        toastRegionSelector: "#profileHistoryToastRegion",
        sessionWarningSelector: "#profileHistorySessionWarning",
        metadataToggleSelector: "#profileHistoryMetadataToggle",
        metadataThumbSelector: "#profileHistoryMetadataThumb",
        metadataLabelSelector: "#profileHistoryMetadataLabel",
        metadataDescriptionSelector: "#profileHistoryMetadataDescription",
        emptyCopy: "You haven’t watched any videos yet.",
        remove: (payload) => this.callbacks.onHistoryReady(payload, this),
      });
    }
  }

  registerEventListeners() {
    if (this.closeButton instanceof HTMLElement) {
      this.closeButton.addEventListener("click", () => {
        this.hide();
        this.callbacks.onClose(this);
      });
    }

    if (this.logoutButton instanceof HTMLElement) {
      this.logoutButton.addEventListener("click", async () => {
        try {
          await this.callbacks.onLogout(this);
        } catch (error) {
          this.showError("Failed to logout. Please try again.");
        }
        this.hide();
      });
    }

    if (this.channelLink instanceof HTMLElement) {
      this.channelLink.addEventListener("click", (event) => {
        event.preventDefault();
        this.callbacks.onChannelLink(this.channelLink, this);
      });
    }

    if (this.addAccountButton instanceof HTMLElement) {
      this.addAccountButton.addEventListener("click", () => {
        this.callbacks.onAddAccount(this);
      });
    }

    Object.entries(this.navButtons).forEach(([name, button]) => {
      if (button instanceof HTMLElement) {
        button.addEventListener("click", () => {
          this.selectPane(name);
        });
      }
    });

    if (this.profileAddRelayBtn instanceof HTMLElement) {
      this.profileAddRelayBtn.addEventListener("click", () => {
        void this.handleAddRelay();
      });
    }

    if (this.profileRestoreRelaysBtn instanceof HTMLElement) {
      this.profileRestoreRelaysBtn.addEventListener("click", () => {
        void this.handleRestoreRelays();
      });
    }

    if (this.profileAddBlockedBtn instanceof HTMLElement) {
      this.profileAddBlockedBtn.addEventListener("click", () => {
        void this.handleAddBlockedCreator();
      });
    }

    if (this.profileBlockedInput instanceof HTMLElement) {
      this.profileBlockedInput.addEventListener("keydown", (event) => {
        if (event.key === "Enter") {
          event.preventDefault();
          void this.handleAddBlockedCreator();
        }
      });
    }

    if (this.walletUriInput instanceof HTMLElement) {
      this.walletUriInput.addEventListener("input", () => {
        this.applyWalletControlState();
      });
    }

    if (this.walletDefaultZapInput instanceof HTMLElement) {
      this.walletDefaultZapInput.addEventListener("input", () => {
        this.applyWalletControlState();
      });
    }

    if (this.walletSaveButton instanceof HTMLElement) {
      this.walletSaveButton.addEventListener("click", () => {
        void this.handleWalletSave();
      });
    }

    if (this.walletTestButton instanceof HTMLElement) {
      this.walletTestButton.addEventListener("click", () => {
        void this.handleWalletTest();
      });
    }

    if (this.walletDisconnectButton instanceof HTMLElement) {
      this.walletDisconnectButton.addEventListener("click", () => {
        void this.handleWalletDisconnect();
      });
    }

    if (this.adminAddModeratorButton instanceof HTMLElement) {
      this.adminAddModeratorButton.addEventListener("click", () => {
        void this.handleAddModerator();
      });
    }

    if (this.adminModeratorInput instanceof HTMLElement) {
      this.adminModeratorInput.addEventListener("keydown", (event) => {
        if (event.key === "Enter") {
          event.preventDefault();
          void this.handleAddModerator();
        }
      });
    }

    if (this.adminAddWhitelistButton instanceof HTMLElement) {
      this.adminAddWhitelistButton.addEventListener("click", () => {
        void this.handleAdminListMutation("whitelist", "add");
      });
    }

    if (this.adminWhitelistInput instanceof HTMLElement) {
      this.adminWhitelistInput.addEventListener("keydown", (event) => {
        if (event.key === "Enter") {
          event.preventDefault();
          void this.handleAdminListMutation("whitelist", "add");
        }
      });
    }

    if (this.adminAddBlacklistButton instanceof HTMLElement) {
      this.adminAddBlacklistButton.addEventListener("click", () => {
        void this.handleAdminListMutation("blacklist", "add");
      });
    }

    if (this.adminBlacklistInput instanceof HTMLElement) {
      this.adminBlacklistInput.addEventListener("keydown", (event) => {
        if (event.key === "Enter") {
          event.preventDefault();
          void this.handleAdminListMutation("blacklist", "add");
        }
      });
    }
  }

  renderSavedProfiles() {
    const normalizedActive = this.normalizeHexPubkey(this.getActivePubkey());
    const entriesNeedingFetch = new Set();
    const savedProfiles = this.getSavedProfiles();

    const resolveMeta = (entry) => {
      if (!entry || typeof entry !== "object") {
        return {
          name: "",
          picture: FALLBACK_PROFILE_AVATAR,
          npub: null,
        };
      }

      const normalizedPubkey = this.normalizeHexPubkey(entry.pubkey);
      let cacheEntry = null;
      if (normalizedPubkey) {
        cacheEntry = this.services.getProfileCacheEntry(normalizedPubkey);
      }
      const cachedProfile = cacheEntry?.profile || {};

      const hasStoredName =
        typeof entry.name === "string" && entry.name.trim().length > 0;
      const hasStoredPicture =
        typeof entry.picture === "string" && entry.picture.trim().length > 0;

      if (
        !cacheEntry &&
        normalizedPubkey &&
        (!hasStoredName || !hasStoredPicture)
      ) {
        entriesNeedingFetch.add(normalizedPubkey);
      }

      let resolvedNpub =
        typeof entry.npub === "string" && entry.npub.trim()
          ? entry.npub.trim()
          : null;
      if (!resolvedNpub && entry.pubkey) {
        resolvedNpub = this.safeEncodeNpub(entry.pubkey);
      }

      return {
        name: cachedProfile.name || entry.name || "",
        picture: cachedProfile.picture || entry.picture || FALLBACK_PROFILE_AVATAR,
        npub: resolvedNpub,
      };
    };

    const savedEntries = Array.isArray(savedProfiles)
      ? savedProfiles.filter((entry) => entry && entry.pubkey)
      : [];

    let activeEntry = null;
    if (normalizedActive) {
      activeEntry = savedEntries.find(
        (entry) => this.normalizeHexPubkey(entry.pubkey) === normalizedActive,
      );
    }
    if (!activeEntry && savedEntries.length) {
      activeEntry = savedEntries[0];
    }

    const activeMeta = activeEntry ? resolveMeta(activeEntry) : null;
    const hasActiveProfile = Boolean(activeEntry && activeMeta);
    const truncate = this.truncateMiddle || ((value) => value);
    const activeNameFallback = activeMeta?.npub
      ? truncate(activeMeta.npub, 32)
      : "Saved profile";
    const activeDisplayName = hasActiveProfile
      ? activeMeta?.name?.trim() || activeNameFallback
      : "No active profile";
    const activeAvatarSrc = hasActiveProfile
      ? activeMeta?.picture || FALLBACK_PROFILE_AVATAR
      : FALLBACK_PROFILE_AVATAR;

    if (this.profileModalName) {
      this.profileModalName.textContent = activeDisplayName;
    }

    if (this.profileModalAvatar instanceof HTMLImageElement) {
      if (this.profileModalAvatar.src !== activeAvatarSrc) {
        this.profileModalAvatar.src = activeAvatarSrc;
      }
      this.profileModalAvatar.alt = hasActiveProfile
        ? `${activeDisplayName} avatar`
        : "Default profile avatar";
    } else if (this.profileModalAvatar instanceof HTMLElement) {
      this.profileModalAvatar.setAttribute("data-avatar-src", activeAvatarSrc);
    }

    if (this.profileModalNpub) {
      if (hasActiveProfile && activeMeta?.npub) {
        this.profileModalNpub.textContent = truncate(activeMeta.npub, 48);
      } else if (hasActiveProfile) {
        this.profileModalNpub.textContent = "npub unavailable";
      } else {
        this.profileModalNpub.textContent = "Link a profile to get started";
      }
    }

    if (this.channelLink instanceof HTMLElement) {
      if (hasActiveProfile && activeMeta?.npub) {
        const encodedNpub = activeMeta.npub;
        this.channelLink.href = `#view=channel-profile&npub=${encodeURIComponent(
          encodedNpub,
        )}`;
        this.channelLink.dataset.targetNpub = encodedNpub;
        this.channelLink.classList.remove("hidden");
        this.channelLink.setAttribute("aria-hidden", "false");
      } else {
        this.channelLink.classList.add("hidden");
        this.channelLink.removeAttribute("href");
        if (this.channelLink.dataset) {
          delete this.channelLink.dataset.targetNpub;
        }
        this.channelLink.setAttribute("aria-hidden", "true");
      }
    }

    if (this.profileAvatar instanceof HTMLImageElement) {
      if (this.profileAvatar.src !== activeAvatarSrc) {
        this.profileAvatar.src = activeAvatarSrc;
      }
      this.profileAvatar.alt = hasActiveProfile
        ? `${activeDisplayName} avatar`
        : this.profileAvatar.alt || "Profile avatar";
    }

    const listEl = this.profileSwitcherList;
    if (listEl instanceof HTMLElement) {
      listEl.innerHTML = "";
      let normalizedSelection = this.normalizeHexPubkey(
        this.profileSwitcherSelectionPubkey,
      );
      if (normalizedSelection && normalizedSelection === normalizedActive) {
        normalizedSelection = null;
        this.profileSwitcherSelectionPubkey = null;
      }

      const entriesToRender = savedEntries.filter((entry) => {
        const normalized = this.normalizeHexPubkey(entry.pubkey);
        return normalized && normalized !== normalizedActive;
      });

      if (!entriesToRender.length) {
        listEl.setAttribute("data-profile-switcher-empty", "true");
        const helper = document.createElement("p");
        helper.className = "profile-switcher__empty text-sm text-gray-400";
        helper.textContent = "No other profiles saved yet.";
        helper.setAttribute("role", "note");
        listEl.appendChild(helper);
      } else {
        listEl.removeAttribute("data-profile-switcher-empty");

        entriesToRender.forEach((entry) => {
          const meta = resolveMeta(entry);
          const button = document.createElement("button");
          button.type = "button";
          button.classList.add("profile-card");
          button.dataset.pubkey = entry.pubkey;
          if (meta.npub) {
            button.dataset.npub = meta.npub;
          }
          if (entry.authType) {
            button.dataset.authType = entry.authType;
          }

          const normalizedPubkey = this.normalizeHexPubkey(entry.pubkey);
          const isSelected =
            normalizedSelection && normalizedPubkey === normalizedSelection;
          if (isSelected) {
            button.classList.add("profile-card--active");
            button.setAttribute("aria-pressed", "true");
          } else {
            button.setAttribute("aria-pressed", "false");
          }

          const avatarSpan = document.createElement("span");
          avatarSpan.className = "profile-card__avatar";
          const avatarImg = document.createElement("img");
          avatarImg.src = meta.picture || FALLBACK_PROFILE_AVATAR;
          const cardDisplayName =
            meta.name?.trim() ||
            (meta.npub ? truncate(meta.npub, 32) : "Saved profile");
          avatarImg.alt = `${cardDisplayName} avatar`;
          avatarSpan.appendChild(avatarImg);

          const metaSpan = document.createElement("span");
          metaSpan.className = "profile-card__meta";

          const topLine = document.createElement("span");
          topLine.className = "profile-card__topline";

          const label = document.createElement("span");
          label.className = "profile-card__label";
          label.textContent =
            entry.authType === "nsec" ? "Direct key" : "Saved profile";

          const action = document.createElement("span");
          action.className = "profile-card__action";
          action.setAttribute("aria-hidden", "true");
          action.textContent = isSelected ? "Selected" : "Switch";

          topLine.append(label, action);

          const nameSpan = document.createElement("span");
          nameSpan.className = "profile-card__name";
          nameSpan.textContent = cardDisplayName;

          const npubSpan = document.createElement("span");
          npubSpan.className = "profile-card__npub";
          npubSpan.textContent = meta.npub
            ? truncate(meta.npub, 48)
            : "npub unavailable";

          metaSpan.append(topLine, nameSpan, npubSpan);
          button.append(avatarSpan, metaSpan);

          const ariaLabel = isSelected
            ? `${cardDisplayName} selected`
            : `Switch to ${cardDisplayName}`;
          button.setAttribute("aria-label", ariaLabel);

          const activateProfile = async (event) => {
            if (event) {
              event.preventDefault();
              event.stopPropagation();
            }

            if (button.dataset.loading === "true") {
              return;
            }

            button.dataset.loading = "true";
            button.setAttribute("aria-busy", "true");

          try {
            await this.services.switchProfile(entry.pubkey);
          } catch (error) {
            console.error("Failed to switch profile:", error);
          } finally {
            button.dataset.loading = "false";
            button.setAttribute("aria-busy", "false");
            }
          };

          button.addEventListener("click", activateProfile);
          button.addEventListener("keydown", (event) => {
            const key = event?.key;
            if (key === "Enter" || key === " " || key === "Spacebar") {
              activateProfile(event);
            }
          });

          listEl.appendChild(button);
        });
      }

      this.updateFocusTrap();
    } else {
      this.updateFocusTrap();
    }

    if (entriesNeedingFetch.size) {
      this.services.batchFetchProfiles(entriesNeedingFetch);
    }
  }

  selectPane(name = "account") {
    const normalized = typeof name === "string" ? name.toLowerCase() : "account";
    const previous = this.getActivePane();
    const availableKeys = Object.keys(this.panes).filter((key) => {
      const pane = this.panes[key];
      if (!(pane instanceof HTMLElement)) {
        return false;
      }
      const button = this.navButtons[key];
      if (button instanceof HTMLElement && button.classList.contains("hidden")) {
        return false;
      }
      return true;
    });

    const fallbackTarget = availableKeys.includes("account")
      ? "account"
      : availableKeys[0] || "account";
    const target = availableKeys.includes(normalized)
      ? normalized
      : fallbackTarget;

    if (previous === "history" && target !== "history") {
      try {
        this.profileHistoryRenderer?.pause();
      } catch (error) {
        console.warn("[profileModal] Failed to pause history renderer:", error);
      }
    }

    Object.entries(this.panes).forEach(([key, pane]) => {
      if (!(pane instanceof HTMLElement)) {
        return;
      }
      const isActive = key === target;
      pane.classList.toggle("hidden", !isActive);
      pane.setAttribute("aria-hidden", (!isActive).toString());
    });

    Object.entries(this.navButtons).forEach(([key, button]) => {
      if (!(button instanceof HTMLElement)) {
        return;
      }
      const isActive = key === target;
      button.setAttribute("aria-selected", isActive ? "true" : "false");
      button.classList.toggle("bg-gray-800", isActive);
      button.classList.toggle("text-white", isActive);
      button.classList.toggle("text-gray-400", !isActive);
    });

    this.setActivePane(target);
    this.updateFocusTrap();

    if (target === "history") {
      void this.populateProfileWatchHistory();
    } else if (target === "wallet") {
      this.refreshWalletPaneState();
    } else if (target === "blocked") {
      this.populateBlockedList();
    }

    this.callbacks.onSelectPane(target, { controller: this });
    this.callbacks.onPaneShown(target, { controller: this });
  }

  populateProfileRelays(relayEntries = null) {
    if (!this.profileRelayList) {
      return;
    }

    const sourceEntries = Array.isArray(relayEntries)
      ? relayEntries
      : this.services.relayManager.getEntries();

    const relays = sourceEntries
      .map((entry) => {
        if (typeof entry === "string") {
          const trimmed = entry.trim();
          return trimmed ? { url: trimmed, mode: "both" } : null;
        }
        if (entry && typeof entry === "object") {
          const url = typeof entry.url === "string" ? entry.url.trim() : "";
          if (!url) {
            return null;
          }
          const mode = typeof entry.mode === "string" ? entry.mode : "both";
          const normalizedMode =
            mode === "read" || mode === "write" ? mode : "both";
          return {
            url,
            mode: normalizedMode,
            read: entry.read !== false,
            write: entry.write !== false,
          };
        }
        return null;
      })
      .filter((entry) => entry && typeof entry.url === "string");

    this.profileRelayList.innerHTML = "";

    if (!relays.length) {
      const emptyState = document.createElement("li");
      emptyState.className =
        "rounded-lg border border-dashed border-gray-700 p-4 text-center text-sm text-gray-400";
      emptyState.textContent = "No relays configured.";
      this.profileRelayList.appendChild(emptyState);
      return;
    }

    relays.forEach((entry) => {
      const item = document.createElement("li");
      item.className =
        "flex items-start justify-between gap-4 rounded-lg bg-gray-800 px-4 py-3";

      const info = document.createElement("div");
      info.className = "flex-1 min-w-0";

      const urlEl = document.createElement("p");
      urlEl.className = "text-sm font-medium text-gray-100 break-all";
      urlEl.textContent = entry.url;

      const statusEl = document.createElement("p");
      statusEl.className = "mt-1 text-xs text-gray-400";
      let modeLabel = "Read & write";
      if (entry.mode === "read") {
        modeLabel = "Read only";
      } else if (entry.mode === "write") {
        modeLabel = "Write only";
      }
      statusEl.textContent = modeLabel;

      info.appendChild(urlEl);
      info.appendChild(statusEl);

      const actions = document.createElement("div");
      actions.className = "flex items-center gap-2";

      const editBtn = document.createElement("button");
      editBtn.type = "button";
      editBtn.className =
        "px-3 py-1 rounded-md bg-gray-700 text-xs font-medium text-gray-100 hover:bg-gray-600 focus:outline-none focus:ring-2 focus:ring-blue-400 focus:ring-offset-2 focus:ring-offset-gray-900";
      editBtn.textContent = "Change mode";
      editBtn.title = "Cycle between read-only, write-only, or read/write modes.";
      editBtn.addEventListener("click", () => {
        void this.handleRelayModeToggle(entry.url);
      });

      const removeBtn = document.createElement("button");
      removeBtn.type = "button";
      removeBtn.className =
        "px-3 py-1 rounded-md bg-gray-700 text-xs font-medium text-gray-100 hover:bg-gray-600 focus:outline-none focus:ring-2 focus:ring-blue-400 focus:ring-offset-2 focus:ring-offset-gray-900";
      removeBtn.textContent = "Remove";
      removeBtn.addEventListener("click", () => {
        void this.handleRemoveRelay(entry.url);
      });

      actions.appendChild(editBtn);
      actions.appendChild(removeBtn);

      item.appendChild(info);
      item.appendChild(actions);

      this.profileRelayList.appendChild(item);
    });
  }

  async handleRelayOperation(operation, {
    successMessage = "Relay preferences updated.",
    skipPublishIfUnchanged = true,
    unchangedMessage = null,
  } = {}) {
    const operationContext = {
      ok: false,
      changed: false,
      reason: null,
      error: null,
      publishResult: null,
      operationResult: null,
    };

    const activePubkey = this.normalizeHexPubkey(this.getActivePubkey());
    if (!activePubkey) {
      this.showError("Please login to manage your relays.");
      operationContext.reason = "no-active-pubkey";
      return operationContext;
    }

    if (typeof operation !== "function") {
      operationContext.reason = "invalid-operation";
      return operationContext;
    }

    const previous = this.services.relayManager.snapshot();
    let result;
    try {
      result = operation();
      operationContext.operationResult = result;
    } catch (error) {
      const message =
        error && typeof error.message === "string" && error.message.trim()
          ? error.message.trim()
          : "Failed to update relay preferences.";
      operationContext.reason = "operation-error";
      operationContext.error = error;
      this.showError(message);
      return operationContext;
    }

    const changed = !!result?.changed;
    operationContext.changed = changed;
    if (!changed && skipPublishIfUnchanged) {
      const reason = result?.reason || "unchanged";
      operationContext.reason = reason;
      if (result?.reason === "duplicate") {
        this.showSuccess("Relay is already configured.");
      } else if (typeof unchangedMessage === "string" && unchangedMessage) {
        this.showSuccess(unchangedMessage);
      }
      this.populateProfileRelays();
      return operationContext;
    }

    this.populateProfileRelays();

    try {
      const publishResult = await this.services.relayManager.publishRelayList(
        activePubkey,
      );
      if (!publishResult?.ok) {
        throw new Error("No relays accepted the update.");
      }
      operationContext.ok = true;
      operationContext.publishResult = publishResult;
      if (successMessage) {
        this.showSuccess(successMessage);
      }
      return operationContext;
    } catch (error) {
      this.services.relayManager.setEntries(previous, { allowEmpty: false });
      this.populateProfileRelays();
      const message =
        error && typeof error.message === "string" && error.message.trim()
          ? error.message.trim()
          : "Failed to publish relay configuration. Please try again.";
      operationContext.reason = "publish-failed";
      operationContext.error = error;
      this.showError(message);
      return operationContext;
    }
  }

  async handleAddRelay() {
    const rawValue =
      typeof this.profileRelayInput?.value === "string"
        ? this.profileRelayInput.value
        : "";
    const trimmed = rawValue.trim();

    const context = {
      input: this.profileRelayInput,
      rawValue,
      url: trimmed,
      result: null,
      success: false,
      reason: null,
    };

    if (!trimmed) {
      this.showError("Enter a relay URL to add.");
      context.reason = "empty";
      this.callbacks.onAddRelay(context, this);
      return context;
    }

    const operationResult = await this.handleRelayOperation(
      () => this.services.relayManager.addRelay(trimmed),
      {
        successMessage: "Relay saved.",
        unchangedMessage: "Relay is already configured.",
      },
    );

    if (this.profileRelayInput) {
      this.profileRelayInput.value = "";
    }

    context.result = operationResult;
    context.success = !!operationResult?.ok;
    context.reason = operationResult?.reason || null;

    this.callbacks.onAddRelay(context, this);
    return context;
  }

  async handleRestoreRelays() {
    const context = {
      confirmed: false,
      result: null,
      success: false,
      reason: null,
    };

    const confirmed = window.confirm("Restore the recommended relay defaults?");
    context.confirmed = confirmed;
    if (!confirmed) {
      context.reason = "cancelled";
      this.callbacks.onRestoreRelays(context, this);
      return context;
    }

    const operationResult = await this.handleRelayOperation(
      () => this.services.relayManager.restoreDefaults(),
      {
        successMessage: "Relay defaults restored.",
        unchangedMessage: "Relay defaults are already in use.",
      },
    );

    context.result = operationResult;
    context.success = !!operationResult?.ok;
    context.reason = operationResult?.reason || null;

    this.callbacks.onRestoreRelays(context, this);
    return context;
  }

  async handleRelayModeToggle(url) {
    if (!url) {
      return;
    }
    await this.handleRelayOperation(
      () => this.services.relayManager.cycleRelayMode(url),
      { successMessage: "Relay mode updated." },
    );
  }

  async handleRemoveRelay(url) {
    if (!url) {
      return;
    }

    const confirmed = window.confirm(
      `Remove ${url} from your relay list?`,
    );
    if (!confirmed) {
      return;
    }

    await this.handleRelayOperation(
      () => this.services.relayManager.removeRelay(url),
      { successMessage: "Relay removed." },
    );
  }

  populateBlockedList(blocked = null) {
    if (!this.profileBlockedList || !this.profileBlockedEmpty) {
      return;
    }

    const sourceEntries =
      Array.isArray(blocked) && blocked.length
        ? blocked
        : this.services.userBlocks.getBlockedPubkeys();

    const normalizedEntries = [];
    const pushEntry = (hex, label) => {
      if (!hex || !label) {
        return;
      }
      normalizedEntries.push({ hex, label });
    };

    sourceEntries.forEach((entry) => {
      if (typeof entry === "string") {
        const trimmed = entry.trim();
        if (!trimmed) {
          return;
        }

        if (trimmed.startsWith("npub1")) {
          const decoded = this.safeDecodeNpub(trimmed);
          if (!decoded) {
            return;
          }
          const label = this.safeEncodeNpub(decoded) || trimmed;
          pushEntry(decoded, label);
          return;
        }

        if (/^[0-9a-f]{64}$/i.test(trimmed)) {
          const hex = trimmed.toLowerCase();
          const label = this.safeEncodeNpub(hex) || hex;
          pushEntry(hex, label);
        }
        return;
      }

      if (entry && typeof entry === "object") {
        const candidateNpub =
          typeof entry.npub === "string" ? entry.npub.trim() : "";
        const candidateHex =
          typeof entry.pubkey === "string" ? entry.pubkey.trim() : "";

        if (candidateHex && /^[0-9a-f]{64}$/i.test(candidateHex)) {
          const normalizedHex = candidateHex.toLowerCase();
          const label =
            candidateNpub && candidateNpub.startsWith("npub1")
              ? candidateNpub
              : this.safeEncodeNpub(normalizedHex) || normalizedHex;
          pushEntry(normalizedHex, label);
          return;
        }

        if (candidateNpub && candidateNpub.startsWith("npub1")) {
          const decoded = this.safeDecodeNpub(candidateNpub);
          if (!decoded) {
            return;
          }
          const label = this.safeEncodeNpub(decoded) || candidateNpub;
          pushEntry(decoded, label);
        }
      }
    });

    const deduped = [];
    const seenHex = new Set();
    normalizedEntries.forEach((entry) => {
      if (!seenHex.has(entry.hex)) {
        seenHex.add(entry.hex);
        deduped.push(entry);
      }
    });

    this.profileBlockedList.innerHTML = "";

    if (!deduped.length) {
      this.profileBlockedEmpty.classList.remove("hidden");
      this.profileBlockedList.classList.add("hidden");
      return;
    }

    this.profileBlockedEmpty.classList.add("hidden");
    this.profileBlockedList.classList.remove("hidden");

    deduped.forEach(({ hex, label }) => {
      const item = document.createElement("li");
      item.className =
        "flex items-center justify-between gap-4 rounded-lg bg-gray-800 px-4 py-3";

      const info = document.createElement("div");
      info.className = "min-w-0";

      const title = document.createElement("p");
      title.className = "text-sm font-medium text-gray-100 break-all";
      title.textContent = label;

      info.appendChild(title);

      const actionBtn = document.createElement("button");
      actionBtn.type = "button";
      actionBtn.className =
        "px-3 py-1 rounded-md bg-gray-700 text-xs font-medium text-gray-100 hover:bg-gray-600 focus:outline-none focus:ring-2 focus:ring-blue-400 focus:ring-offset-2 focus:ring-offset-gray-900";
      actionBtn.textContent = "Remove";
      actionBtn.dataset.blockedHex = hex;
      actionBtn.addEventListener("click", () => {
        void this.handleRemoveBlockedCreator(hex);
      });

      item.appendChild(info);
      item.appendChild(actionBtn);

      this.profileBlockedList.appendChild(item);
    });
  }

  async handleAddBlockedCreator() {
    const input = this.profileBlockedInput || null;
    const rawValue = typeof input?.value === "string" ? input.value : "";
    const trimmed = rawValue.trim();

    const context = {
      input,
      rawValue,
      value: trimmed,
      success: false,
      reason: null,
      error: null,
    };

    if (!input) {
      context.reason = "missing-input";
      this.callbacks.onAddBlocked(context, this);
      return context;
    }

    if (!trimmed) {
      this.showError("Enter an npub to block.");
      context.reason = "empty";
      this.callbacks.onAddBlocked(context, this);
      return context;
    }

    const activePubkey = this.normalizeHexPubkey(this.getActivePubkey());
    if (!activePubkey) {
      this.showError("Please login to manage your block list.");
      context.reason = "no-active-pubkey";
      this.callbacks.onAddBlocked(context, this);
      return context;
    }

    const actorHex = activePubkey;
    let targetHex = "";

    if (trimmed.startsWith("npub1")) {
      targetHex = this.safeDecodeNpub(trimmed) || "";
      if (!targetHex) {
        this.showError("Invalid npub. Please double-check and try again.");
        context.reason = "invalid-npub";
        this.callbacks.onAddBlocked(context, this);
        return context;
      }
    } else if (/^[0-9a-f]{64}$/i.test(trimmed)) {
      targetHex = trimmed.toLowerCase();
    } else {
      this.showError("Enter a valid npub or hex pubkey.");
      context.reason = "invalid-value";
      this.callbacks.onAddBlocked(context, this);
      return context;
    }

    if (targetHex === actorHex) {
      this.showError("You cannot block yourself.");
      context.reason = "self";
      this.callbacks.onAddBlocked(context, this);
      return context;
    }

    context.targetHex = targetHex;

    try {
      await this.services.userBlocks.ensureLoaded(actorHex);

      if (this.services.userBlocks.isBlocked(targetHex)) {
        this.showSuccess("You already blocked this creator.");
        context.reason = "already-blocked";
      } else {
        await this.services.userBlocks.addBlock(targetHex, actorHex);
        this.showSuccess(
          "Creator blocked. You won't see their videos anymore.",
        );
        context.success = true;
        context.reason = "blocked";
      }

      this.profileBlockedInput.value = "";
      this.populateBlockedList();
      await this.services.loadVideos();
    } catch (error) {
      console.error("Failed to add creator to personal block list:", error);
      context.error = error;
      context.reason = error?.code || "service-error";
      const message =
        error?.code === "nip04-missing"
          ? "Your Nostr extension must support NIP-04 to manage private lists."
          : "Failed to update your block list. Please try again.";
      this.showError(message);
    }

    this.callbacks.onAddBlocked(context, this);
    return context;
  }

  async handleRemoveBlockedCreator(candidate) {
    const activePubkey = this.normalizeHexPubkey(this.getActivePubkey());
    if (!activePubkey) {
      this.showError("Please login to manage your block list.");
      return;
    }

    let targetHex = "";
    if (typeof candidate === "string") {
      const trimmed = candidate.trim();
      if (!trimmed) {
        return;
      }

      if (trimmed.startsWith("npub1")) {
        targetHex = this.safeDecodeNpub(trimmed) || "";
      } else if (/^[0-9a-f]{64}$/i.test(trimmed)) {
        targetHex = trimmed.toLowerCase();
      }
    }

    if (!targetHex) {
      console.warn("No valid pubkey to remove from block list:", candidate);
      return;
    }

    try {
      await this.services.userBlocks.ensureLoaded(activePubkey);

      if (!this.services.userBlocks.isBlocked(targetHex)) {
        this.showSuccess("Creator already removed from your block list.");
      } else {
        await this.services.userBlocks.removeBlock(targetHex, activePubkey);
        this.showSuccess("Creator removed from your block list.");
      }

      this.populateBlockedList();
      await this.services.loadVideos();
    } catch (error) {
      console.error(
        "Failed to remove creator from personal block list:",
        error,
      );
      const message =
        error?.code === "nip04-missing"
          ? "Your Nostr extension must support NIP-04 to manage private lists."
          : "Failed to update your block list. Please try again.";
      this.showError(message);
    }
  }

  async populateProfileWatchHistory() {
    if (!this.profileHistoryRenderer) {
      return;
    }

    let primaryActor = this.normalizeHexPubkey(this.getActivePubkey());
    if (!primaryActor && this.services.nostrClient?.sessionActor?.pubkey) {
      const candidate = this.services.nostrClient.sessionActor.pubkey;
      if (typeof candidate === "string" && candidate) {
        primaryActor = candidate;
      }
    }

    try {
      await this.profileHistoryRenderer.ensureInitialLoad({ actor: primaryActor });
      await this.profileHistoryRenderer.refresh({
        actor: primaryActor,
        force: true,
      });

      if (!this.boundProfileHistoryVisibility) {
        this.boundProfileHistoryVisibility = () => {
          if (!this.profileHistoryRenderer) {
            return;
          }
          if (document.visibilityState === "visible") {
            this.profileHistoryRenderer.resume();
          } else {
            this.profileHistoryRenderer.pause();
          }
        };
        document.addEventListener(
          "visibilitychange",
          this.boundProfileHistoryVisibility,
        );
      }

      if (document.visibilityState === "hidden") {
        this.profileHistoryRenderer.pause();
      } else {
        this.profileHistoryRenderer.resume();
      }
    } catch (error) {
      console.error(
        "[profileModal] Failed to populate watch history pane:",
        error,
      );
    }
  }

  applyWalletControlState() {
    const hasActive = Boolean(this.normalizeHexPubkey(this.getActivePubkey()));
    const busy = this.isWalletBusy();
    const uriValue =
      typeof this.walletUriInput?.value === "string"
        ? this.walletUriInput.value.trim()
        : "";
    const hasUri = uriValue.length > 0;

    const applyDisabledState = (element, disabled) => {
      if (!(element instanceof HTMLElement)) {
        return;
      }
      if ("disabled" in element) {
        element.disabled = disabled;
      }
      if (disabled) {
        element.setAttribute("aria-disabled", "true");
      } else {
        element.removeAttribute("aria-disabled");
      }
    };

    applyDisabledState(this.walletUriInput, busy || !hasActive);
    applyDisabledState(this.walletDefaultZapInput, busy || !hasActive);
    applyDisabledState(this.walletSaveButton, busy || !hasActive);

    const testDisabled = busy || !hasActive || !hasUri;
    applyDisabledState(this.walletTestButton, testDisabled);

    const disconnectDisabled = busy || !hasActive || !hasUri;
    applyDisabledState(this.walletDisconnectButton, disconnectDisabled);
    if (this.walletDisconnectButton instanceof HTMLElement) {
      this.walletDisconnectButton.classList.toggle("hidden", !hasUri);
      if (!hasUri) {
        this.walletDisconnectButton.setAttribute("aria-hidden", "true");
      } else {
        this.walletDisconnectButton.removeAttribute("aria-hidden");
      }
    }
  }

  updateWalletStatus(message, variant = "info") {
    if (!(this.profileWalletStatusText instanceof HTMLElement)) {
      return;
    }

    const element = this.profileWalletStatusText;
    const variants = {
      success: "text-green-400",
      error: "text-red-400",
      info: "text-gray-400",
    };

    element.classList.remove("text-gray-400", "text-green-400", "text-red-400");
    const variantClass = variants[variant] || variants.info;
    element.classList.add(variantClass);
    element.textContent = message || "";
  }

  refreshWalletPaneState() {
    const hasActive = Boolean(this.normalizeHexPubkey(this.getActivePubkey()));
    const setInputValue = (element, value) => {
      if (element && typeof element === "object" && "value" in element) {
        try {
          element.value = value;
        } catch (error) {
          if (element instanceof HTMLElement) {
            element.setAttribute("data-value", value);
          }
        }
      }
    };
    if (!hasActive) {
      setInputValue(this.walletUriInput, "");
      setInputValue(this.walletDefaultZapInput, "");
      this.updateWalletStatus("Sign in to connect a wallet.", "info");
      this.applyWalletControlState();
      return;
    }

    const settings = this.services.getActiveNwcSettings();
    setInputValue(this.walletUriInput, settings.nwcUri || "");
    setInputValue(
      this.walletDefaultZapInput,
      settings.defaultZap === null || settings.defaultZap === undefined
        ? ""
        : String(settings.defaultZap),
    );

    if (settings.nwcUri) {
      this.updateWalletStatus(
        "Wallet connected via Nostr Wallet Connect.",
        "success",
      );
    } else {
      this.updateWalletStatus("No wallet connected yet.", "info");
    }

    this.applyWalletControlState();
  }

  getWalletFormValues() {
    const uri =
      typeof this.walletUriInput?.value === "string"
        ? this.walletUriInput.value.trim()
        : "";
    const defaultZapRaw =
      typeof this.walletDefaultZapInput?.value === "string"
        ? this.walletDefaultZapInput.value.trim()
        : "";

    if (defaultZapRaw) {
      const numeric = Number(defaultZapRaw);
      if (!Number.isFinite(numeric)) {
        return { uri, error: "Default zap amount must be a number." };
      }
      const rounded = Math.round(numeric);
      if (!Number.isFinite(rounded) || rounded < 0) {
        return {
          uri,
          error: "Default zap amount must be a positive whole number.",
        };
      }
      const clamped = Math.min(MAX_WALLET_DEFAULT_ZAP, rounded);
      return { uri, defaultZap: clamped };
    }

    return { uri, defaultZap: null };
  }

  validateWalletUri(uri, { requireValue = false } = {}) {
    const value = typeof uri === "string" ? uri.trim() : "";
    if (!value) {
      if (requireValue) {
        return {
          valid: false,
          sanitized: "",
          message: "Enter a wallet connect URI before continuing.",
        };
      }
      return { valid: true, sanitized: "" };
    }

    if (!value.toLowerCase().startsWith(NWC_URI_SCHEME)) {
      return {
        valid: false,
        sanitized: value,
        message: `Wallet URI must start with ${NWC_URI_SCHEME}.`,
      };
    }

    return { valid: true, sanitized: value };
  }

  async handleWalletSave() {
    const { uri, defaultZap, error } = this.getWalletFormValues();
    const context = {
      uri,
      defaultZap: defaultZap ?? null,
      sanitizedUri: null,
      success: false,
      reason: null,
      error: error || null,
      status: null,
      variant: null,
    };

    if (this.isWalletBusy()) {
      context.reason = "busy";
      this.callbacks.onWalletSave(context, this);
      return context;
    }

    if (error) {
      this.updateWalletStatus(error, "error");
      this.showError(error);
      context.reason = "invalid-default-zap";
      if (this.walletDefaultZapInput instanceof HTMLElement) {
        this.walletDefaultZapInput.focus();
      }
      this.callbacks.onWalletSave(context, this);
      return context;
    }

    const { valid, sanitized, message } = this.validateWalletUri(uri);
    context.sanitizedUri = sanitized;
    if (!valid) {
      this.updateWalletStatus(message, "error");
      this.showError(message);
      context.reason = "invalid-uri";
      context.error = message;
      if (this.walletUriInput instanceof HTMLElement) {
        this.walletUriInput.focus();
      }
      this.callbacks.onWalletSave(context, this);
      return context;
    }

    const normalizedActive = this.normalizeHexPubkey(this.getActivePubkey());
    if (!normalizedActive) {
      const loginMessage = "Sign in to save wallet settings.";
      this.updateWalletStatus(loginMessage, "error");
      this.showError(loginMessage);
      context.reason = "no-active-pubkey";
      context.error = loginMessage;
      this.callbacks.onWalletSave(context, this);
      return context;
    }

    this.setWalletPaneBusy(true);
    let finalStatus = null;
    let finalVariant = "info";
    try {
      await this.services.updateActiveNwcSettings({
        nwcUri: sanitized,
        defaultZap,
      });

      if (sanitized) {
        finalStatus = "Wallet settings saved.";
        finalVariant = "success";
        this.showSuccess("Wallet settings saved.");
        context.reason = "saved";
      } else {
        finalStatus = "Wallet connection removed.";
        finalVariant = "info";
        this.showStatus("Wallet connection removed.");
        context.reason = "cleared";
      }
      context.success = true;
    } catch (error) {
      const fallbackMessage = "Failed to save wallet settings.";
      const detail =
        error && typeof error.message === "string" && error.message.trim()
          ? error.message.trim()
          : fallbackMessage;
      finalStatus = detail;
      finalVariant = "error";
      context.error = detail;
      context.reason = error?.code || "service-error";
      this.showError(detail);
    } finally {
      this.setWalletPaneBusy(false);
      this.refreshWalletPaneState();
      if (finalStatus) {
        this.updateWalletStatus(finalStatus, finalVariant);
      }
      context.status = finalStatus;
      context.variant = finalVariant;
      this.callbacks.onWalletSave(context, this);
    }

    return context;
  }

  async handleWalletTest() {
    const { uri, defaultZap, error } = this.getWalletFormValues();
    const context = {
      uri,
      defaultZap: defaultZap ?? null,
      sanitizedUri: null,
      success: false,
      reason: null,
      error: error || null,
      status: null,
      variant: null,
      result: null,
    };

    if (this.isWalletBusy()) {
      context.reason = "busy";
      this.callbacks.onWalletTest(context, this);
      return context.result;
    }

    if (error) {
      this.updateWalletStatus(error, "error");
      this.showError(error);
      context.reason = "invalid-default-zap";
      if (this.walletDefaultZapInput instanceof HTMLElement) {
        this.walletDefaultZapInput.focus();
      }
      this.callbacks.onWalletTest(context, this);
      return context.result;
    }

    const { valid, sanitized, message } = this.validateWalletUri(uri, {
      requireValue: true,
    });
    context.sanitizedUri = sanitized;
    if (!valid) {
      this.updateWalletStatus(message, "error");
      this.showError(message);
      context.reason = "invalid-uri";
      context.error = message;
      if (this.walletUriInput instanceof HTMLElement) {
        this.walletUriInput.focus();
      }
      this.callbacks.onWalletTest(context, this);
      return context.result;
    }

    const normalizedActive = this.normalizeHexPubkey(this.getActivePubkey());
    if (!normalizedActive) {
      const loginMessage = "Sign in to test your wallet connection.";
      this.updateWalletStatus(loginMessage, "error");
      this.showError(loginMessage);
      context.reason = "no-active-pubkey";
      context.error = loginMessage;
      this.callbacks.onWalletTest(context, this);
      return context.result;
    }

    this.setWalletPaneBusy(true);
    let finalStatus = null;
    let finalVariant = "info";
    try {
      const result = await this.services.ensureWallet({
        nwcUri: sanitized,
        defaultZap,
      });
      finalStatus = "Wallet connection confirmed.";
      finalVariant = "success";
      this.showSuccess("Wallet connection confirmed.");
      context.result = result;
      context.success = true;
      context.reason = "tested";

      const currentSettings = this.services.getActiveNwcSettings();
      if (currentSettings.nwcUri === sanitized) {
        await this.services.updateActiveNwcSettings({ lastChecked: Date.now() });
      }
    } catch (error) {
      const fallbackMessage = "Failed to reach wallet.";
      const detail =
        error && typeof error.message === "string" && error.message.trim()
          ? error.message.trim()
          : fallbackMessage;
      finalStatus = detail;
      finalVariant = "error";
      context.error = detail;
      context.reason = error?.code || "service-error";
      this.showError(detail);
    } finally {
      this.setWalletPaneBusy(false);
      this.refreshWalletPaneState();
      if (finalStatus) {
        this.updateWalletStatus(finalStatus, finalVariant);
      }
      context.status = finalStatus;
      context.variant = finalVariant;
      this.callbacks.onWalletTest(context, this);
    }

    return context.result;
  }

  async handleWalletDisconnect() {
    const context = {
      success: false,
      reason: null,
      error: null,
      status: null,
      variant: null,
    };

    if (this.isWalletBusy()) {
      context.reason = "busy";
      this.callbacks.onWalletDisconnect(context, this);
      return context;
    }

    const normalizedActive = this.normalizeHexPubkey(this.getActivePubkey());
    if (!normalizedActive) {
      const loginMessage = "Sign in to disconnect your wallet.";
      this.updateWalletStatus(loginMessage, "error");
      this.showError(loginMessage);
      context.reason = "no-active-pubkey";
      context.error = loginMessage;
      this.callbacks.onWalletDisconnect(context, this);
      return context;
    }

    this.setWalletPaneBusy(true);
    let finalStatus = null;
    let finalVariant = "info";
    try {
      await this.services.updateActiveNwcSettings(
        this.services.createDefaultNwcSettings(),
      );
      finalStatus = "Wallet disconnected.";
      this.showStatus("Wallet disconnected.");
      context.success = true;
      context.reason = "disconnected";
    } catch (error) {
      const fallbackMessage = "Failed to disconnect wallet.";
      const detail =
        error && typeof error.message === "string" && error.message.trim()
          ? error.message.trim()
          : fallbackMessage;
      finalStatus = detail;
      finalVariant = "error";
      context.error = detail;
      context.reason = error?.code || "service-error";
      this.showError(detail);
    } finally {
      this.setWalletPaneBusy(false);
      this.refreshWalletPaneState();
      if (finalStatus) {
        this.updateWalletStatus(finalStatus, finalVariant);
      }
      context.status = finalStatus;
      context.variant = finalVariant;
      this.callbacks.onWalletDisconnect(context, this);
    }

    return context;
  }

  storeAdminEmptyMessages() {
    const capture = (element) => {
      if (element instanceof HTMLElement && !element.dataset.defaultMessage) {
        element.dataset.defaultMessage = element.textContent || "";
      }
    };

    capture(this.adminModeratorsEmpty);
    capture(this.adminWhitelistEmpty);
    capture(this.adminBlacklistEmpty);
  }

  setAdminLoading(isLoading) {
    this.storeAdminEmptyMessages();
    if (this.panes.admin instanceof HTMLElement) {
      this.panes.admin.setAttribute("aria-busy", isLoading ? "true" : "false");
    }

    const toggleMessage = (element, message) => {
      if (!(element instanceof HTMLElement)) {
        return;
      }
      if (isLoading) {
        element.textContent = message;
        element.classList.remove("hidden");
      } else {
        element.textContent = element.dataset.defaultMessage || element.textContent;
      }
    };

    toggleMessage(this.adminModeratorsEmpty, "Loading moderators…");
    toggleMessage(this.adminWhitelistEmpty, "Loading whitelist…");
    toggleMessage(this.adminBlacklistEmpty, "Loading blacklist…");
  }

  clearAdminLists() {
    this.storeAdminEmptyMessages();
    if (this.adminModeratorList) {
      this.adminModeratorList.innerHTML = "";
    }
    if (this.adminWhitelistList) {
      this.adminWhitelistList.innerHTML = "";
    }
    if (this.adminBlacklistList) {
      this.adminBlacklistList.innerHTML = "";
    }
    if (this.adminModeratorsEmpty instanceof HTMLElement) {
      this.adminModeratorsEmpty.textContent =
        this.adminModeratorsEmpty.dataset.defaultMessage ||
        this.adminModeratorsEmpty.textContent;
      this.adminModeratorsEmpty.classList.remove("hidden");
    }
    if (this.adminWhitelistEmpty instanceof HTMLElement) {
      this.adminWhitelistEmpty.textContent =
        this.adminWhitelistEmpty.dataset.defaultMessage ||
        this.adminWhitelistEmpty.textContent;
      this.adminWhitelistEmpty.classList.remove("hidden");
    }
    if (this.adminBlacklistEmpty instanceof HTMLElement) {
      this.adminBlacklistEmpty.textContent =
        this.adminBlacklistEmpty.dataset.defaultMessage ||
        this.adminBlacklistEmpty.textContent;
      this.adminBlacklistEmpty.classList.remove("hidden");
    }
  }

  renderAdminList(listEl, emptyEl, entries, options = {}) {
    if (!(listEl instanceof HTMLElement) || !(emptyEl instanceof HTMLElement)) {
      return;
    }

    const { onRemove, removeLabel = "Remove", confirmMessage, removable = true } =
      options;

    listEl.innerHTML = "";
    const values = Array.isArray(entries) ? [...entries] : [];
    values.sort((a, b) => a.localeCompare(b));

    if (!values.length) {
      emptyEl.classList.remove("hidden");
      listEl.classList.add("hidden");
      return;
    }

    emptyEl.classList.add("hidden");
    listEl.classList.remove("hidden");

    values.forEach((npub) => {
      const item = document.createElement("li");
      item.className =
        "flex flex-col gap-2 rounded-lg bg-gray-800 px-4 py-3 sm:flex-row sm:items-center sm:justify-between";

      const label = document.createElement("p");
      label.className = "text-sm font-medium text-gray-100 break-all";
      label.textContent = npub;
      item.appendChild(label);

      if (removable && typeof onRemove === "function") {
        const removeBtn = document.createElement("button");
        removeBtn.type = "button";
        removeBtn.className =
          "self-start rounded-md bg-gray-700 px-3 py-1 text-xs font-medium text-gray-100 transition hover:bg-gray-600 focus:outline-none focus:ring-2 focus:ring-blue-400 focus:ring-offset-2 focus:ring-offset-gray-900";
        removeBtn.textContent = removeLabel;
        removeBtn.addEventListener("click", () => {
          if (confirmMessage) {
            const message = confirmMessage.replace("{npub}", npub);
            if (!window.confirm(message)) {
              return;
            }
          }
          removeBtn.disabled = true;
          removeBtn.setAttribute("aria-busy", "true");
          onRemove(npub, removeBtn);
        });
        item.appendChild(removeBtn);
      }

      listEl.appendChild(item);
    });
  }

  populateAdminLists() {
    const actorNpub = this.services.getCurrentUserNpub();
    if (!actorNpub || !this.services.accessControl.canEditAdminLists(actorNpub)) {
      this.clearAdminLists();
      return;
    }

    const isSuperAdmin = this.services.accessControl.isSuperAdmin(actorNpub);
    const editors = this.services.accessControl
      .getEditors()
      .filter((npub) => npub && npub !== ADMIN_SUPER_NPUB);
    const whitelist = this.services.accessControl.getWhitelist();
    const blacklist = this.services.accessControl.getBlacklist();

    this.renderAdminList(
      this.adminModeratorList,
      this.adminModeratorsEmpty,
      editors,
      {
        onRemove: (npub, button) => this.handleRemoveModerator(npub, button),
        removeLabel: "Remove",
        confirmMessage:
          "Remove moderator {npub}? They will immediately lose access to the admin panel.",
        removable: isSuperAdmin,
      },
    );

    this.renderAdminList(
      this.adminWhitelistList,
      this.adminWhitelistEmpty,
      whitelist,
      {
        onRemove: (npub, button) =>
          this.handleAdminListMutation("whitelist", "remove", npub, button),
        removeLabel: "Remove",
        confirmMessage: "Remove {npub} from the whitelist?",
        removable: true,
      },
    );

    this.renderAdminList(
      this.adminBlacklistList,
      this.adminBlacklistEmpty,
      blacklist,
      {
        onRemove: (npub, button) =>
          this.handleAdminListMutation("blacklist", "remove", npub, button),
        removeLabel: "Unblock",
        confirmMessage: "Remove {npub} from the blacklist?",
        removable: true,
      },
    );
  }

  async refreshAdminPaneState() {
    const adminNav = this.navButtons.admin;
    const adminPane = this.panes.admin;

    let loadError = null;
    this.setAdminLoading(true);
    this.showStatus("Fetching moderation filters…");
    try {
      await this.services.accessControl.ensureReady();
    } catch (error) {
      loadError = error;
    }

    const actorNpub = this.services.getCurrentUserNpub();
    const canEdit =
      !!actorNpub && this.services.accessControl.canEditAdminLists(actorNpub);
    const isSuperAdmin =
      !!actorNpub && this.services.accessControl.isSuperAdmin(actorNpub);

    if (adminNav instanceof HTMLElement) {
      adminNav.classList.toggle("hidden", !canEdit);
      if (!canEdit) {
        adminNav.setAttribute("aria-selected", "false");
      }
    }

    if (adminPane instanceof HTMLElement) {
      adminPane.classList.toggle("hidden", !canEdit);
      adminPane.setAttribute("aria-hidden", (!canEdit).toString());
    }

    if (loadError) {
      if (loadError?.code === "nostr-unavailable") {
        console.info("Moderation lists are still syncing with relays.");
        return;
      }

      console.error("Failed to load admin lists:", loadError);
      this.showStatus(null);
      this.showError("Unable to load moderation lists. Please try again.");
      this.clearAdminLists();
      this.setAdminLoading(false);
      return;
    }

    if (!canEdit) {
      this.clearAdminLists();
      this.showStatus(null);
      this.setAdminLoading(false);
      if (
        adminNav instanceof HTMLElement &&
        adminNav.classList.contains("bg-gray-800")
      ) {
        this.selectPane("account");
      }
      return;
    }

    if (this.adminModeratorsSection instanceof HTMLElement) {
      this.adminModeratorsSection.classList.toggle("hidden", !isSuperAdmin);
      this.adminModeratorsSection.setAttribute(
        "aria-hidden",
        (!isSuperAdmin).toString(),
      );
    }
    this.populateAdminLists();
    this.showStatus(null);
    this.setAdminLoading(false);
  }

  normalizeNpubValue(value) {
    if (typeof value !== "string") {
      return null;
    }
    const trimmed = value.trim();
    if (!trimmed) {
      return null;
    }
    if (trimmed.startsWith("npub1")) {
      return trimmed;
    }
    const normalizedHex = this.normalizeHexPubkey(trimmed);
    if (!normalizedHex) {
      return null;
    }
    return this.safeEncodeNpub(normalizedHex);
  }

  ensureAdminActor(requireSuperAdmin = false) {
    const actorNpub = this.services.getCurrentUserNpub();
    if (!actorNpub) {
      this.showError("Please login with a Nostr account to manage admin settings.");
      return null;
    }
    if (!this.services.accessControl.canEditAdminLists(actorNpub)) {
      this.showError("You do not have permission to manage BitVid moderation lists.");
      return null;
    }
    if (requireSuperAdmin && !this.services.accessControl.isSuperAdmin(actorNpub)) {
      this.showError("Only the Super Admin can manage moderators or whitelist mode.");
      return null;
    }
    return actorNpub;
  }

  async handleAddModerator() {
    const input = this.adminModeratorInput || null;
    const rawValue = typeof input?.value === "string" ? input.value : "";
    const trimmed = rawValue.trim();
    const context = {
      input,
      rawValue,
      value: trimmed,
      actorNpub: null,
      success: false,
      reason: null,
      error: null,
      result: null,
    };

    let preloadError = null;
    try {
      await this.services.accessControl.ensureReady();
    } catch (error) {
      preloadError = error;
      console.error("Failed to load admin lists before adding moderator:", error);
    }

    if (preloadError) {
      this.showError(this.describeAdminError(preloadError.code || "storage-error"));
      context.reason = preloadError.code || "storage-error";
      context.error = preloadError;
      this.callbacks.onAdminAddModerator(context, this);
      return context;
    }

    const actorNpub = this.ensureAdminActor(true);
    context.actorNpub = actorNpub;
    if (!actorNpub || !input) {
      context.reason = actorNpub ? "missing-input" : "unauthorized";
      this.callbacks.onAdminAddModerator(context, this);
      return context;
    }

    if (!trimmed) {
      this.showError("Enter an npub to add as a moderator.");
      context.reason = "empty";
      this.callbacks.onAdminAddModerator(context, this);
      return context;
    }

    if (this.adminAddModeratorButton) {
      this.adminAddModeratorButton.disabled = true;
      this.adminAddModeratorButton.setAttribute("aria-busy", "true");
    }

    try {
      const result = await this.services.accessControl.addModerator(
        actorNpub,
        trimmed,
      );
      context.result = result;
      if (!result.ok) {
        this.showError(this.describeAdminError(result.error));
        context.reason = result.error || "service-error";
        return context;
      }

      this.adminModeratorInput.value = "";
      this.showSuccess("Moderator added successfully.");
      await this.services.onAccessControlUpdated();
      context.success = true;
      context.reason = "added";
    } finally {
      if (this.adminAddModeratorButton) {
        this.adminAddModeratorButton.disabled = false;
        this.adminAddModeratorButton.removeAttribute("aria-busy");
      }
      this.callbacks.onAdminAddModerator(context, this);
    }

    return context;
  }

  async handleRemoveModerator(npub, button) {
    const context = {
      npub,
      button,
      actorNpub: null,
      success: false,
      reason: null,
      error: null,
      result: null,
    };

    const releaseButton = () => {
      if (button instanceof HTMLElement) {
        button.disabled = false;
        button.removeAttribute("aria-busy");
      }
    };

    let preloadError = null;
    try {
      await this.services.accessControl.ensureReady();
    } catch (error) {
      preloadError = error;
      console.error("Failed to load admin lists before removing moderator:", error);
    }

    if (preloadError) {
      this.showError(this.describeAdminError(preloadError.code || "storage-error"));
      context.reason = preloadError.code || "storage-error";
      context.error = preloadError;
      releaseButton();
      this.callbacks.onAdminRemoveModerator(context, this);
      return context;
    }

    const actorNpub = this.ensureAdminActor(true);
    context.actorNpub = actorNpub;
    if (!actorNpub) {
      context.reason = "unauthorized";
      releaseButton();
      this.callbacks.onAdminRemoveModerator(context, this);
      return context;
    }

    const result = await this.services.accessControl.removeModerator(
      actorNpub,
      npub,
    );
    context.result = result;
    if (!result.ok) {
      this.showError(this.describeAdminError(result.error));
      context.reason = result.error || "service-error";
      releaseButton();
      this.callbacks.onAdminRemoveModerator(context, this);
      return context;
    }

    this.showSuccess("Moderator removed.");
    await this.services.onAccessControlUpdated();
    context.success = true;
    context.reason = "removed";

    releaseButton();
    this.callbacks.onAdminRemoveModerator(context, this);
    return context;
  }

  async handleAdminListMutation(listType, action, explicitNpub = null, sourceButton = null) {
    const isWhitelist = listType === "whitelist";
    const input = isWhitelist ? this.adminWhitelistInput : this.adminBlacklistInput;
    const addButton = isWhitelist ? this.adminAddWhitelistButton : this.adminAddBlacklistButton;
    const isAdd = action === "add";
    let buttonToToggle = sourceButton || (isAdd ? addButton : null);

    const context = {
      listType,
      action,
      explicitNpub,
      sourceButton,
      actorNpub: null,
      targetNpub: null,
      success: false,
      reason: null,
      error: null,
      result: null,
      notificationResult: null,
      notificationError: null,
    };

    const callbackMap = {
      whitelist: {
        add: this.callbacks.onAdminAddWhitelist,
        remove: this.callbacks.onAdminRemoveWhitelist,
      },
      blacklist: {
        add: this.callbacks.onAdminAddBlacklist,
        remove: this.callbacks.onAdminRemoveBlacklist,
      },
    };

    const adminCallback = callbackMap[listType]?.[action] || noop;

    const setBusy = (element, busy) => {
      if (!(element instanceof HTMLElement)) {
        return;
      }
      element.disabled = !!busy;
      if (busy) {
        element.setAttribute("aria-busy", "true");
      } else {
        element.removeAttribute("aria-busy");
      }
    };

    const finalize = () => {
      setBusy(buttonToToggle, false);
      adminCallback(context, this);
    };

    let preloadError = null;
    try {
      await this.services.accessControl.ensureReady();
    } catch (error) {
      preloadError = error;
      console.error("Failed to load admin lists before updating entries:", error);
    }

    if (preloadError) {
      this.showError(this.describeAdminError(preloadError.code || "storage-error"));
      context.reason = preloadError.code || "storage-error";
      context.error = preloadError;
      finalize();
      return context;
    }

    const actorNpub = this.ensureAdminActor(false);
    context.actorNpub = actorNpub;
    if (!actorNpub) {
      context.reason = "unauthorized";
      finalize();
      return context;
    }

    let target = typeof explicitNpub === "string" ? explicitNpub.trim() : "";
    if (!target && input instanceof HTMLInputElement) {
      target = input.value.trim();
    }
    context.targetNpub = target;

    if (isAdd && !target) {
      this.showError("Enter an npub before adding it to the list.");
      context.reason = "empty";
      finalize();
      return context;
    }

    buttonToToggle = buttonToToggle || (isAdd ? addButton : null);
    setBusy(buttonToToggle, true);

    let result;
    if (isWhitelist) {
      result = isAdd
        ? await this.services.accessControl.addToWhitelist(actorNpub, target)
        : await this.services.accessControl.removeFromWhitelist(actorNpub, target);
    } else {
      result = isAdd
        ? await this.services.accessControl.addToBlacklist(actorNpub, target)
        : await this.services.accessControl.removeFromBlacklist(actorNpub, target);
    }

    context.result = result;

    if (!result.ok) {
      this.showError(this.describeAdminError(result.error));
      context.reason = result.error || "service-error";
      finalize();
      return context;
    }

    if (isAdd && input instanceof HTMLInputElement) {
      input.value = "";
    }

    const successMessage = isWhitelist
      ? isAdd
        ? "Added to the whitelist."
        : "Removed from the whitelist."
      : isAdd
      ? "Added to the blacklist."
      : "Removed from the blacklist.";
    this.showSuccess(successMessage);
    await this.services.onAccessControlUpdated();

    context.success = true;
    context.reason = isAdd ? "added" : "removed";

    if (isAdd) {
      try {
        const notifyResult = await this.sendAdminListNotification({
          listType,
          actorNpub,
          targetNpub: target,
        });
        context.notificationResult = notifyResult;
        if (!notifyResult?.ok) {
          const errorMessage = this.describeNotificationError(notifyResult?.error);
          if (errorMessage) {
            this.showError(errorMessage);
          }
          if (isDevMode && notifyResult?.error) {
            console.warn(
              "[admin] Failed to send list notification DM:",
              notifyResult,
            );
          }
        }
      } catch (error) {
        context.notificationError = error;
        console.error("Failed to send list notification DM:", error);
        if (isDevMode) {
          console.warn(
            "List update succeeded, but DM notification threw an unexpected error.",
            error,
          );
        }
      }
    }

    finalize();
    return context;
  }

  describeAdminError(code) {
    if (typeof this.describeAdminErrorService === "function") {
      const result = this.describeAdminErrorService(code);
      if (typeof result === "string" && result) {
        return result;
      }
    }

    switch (code) {
      case "invalid npub":
        return "Please provide a valid npub address.";
      case "immutable":
        return "That account cannot be modified.";
      case "self":
        return "You cannot blacklist yourself.";
      case "forbidden":
        return "You do not have permission to perform that action.";
      case "nostr-unavailable":
        return "Unable to reach the configured Nostr relays. Please retry once your connection is restored.";
      case "nostr-extension-missing":
        return "Connect a Nostr extension before editing moderation lists.";
      case "signature-failed":
        return "We couldn’t sign the update with your Nostr key. Please reconnect your extension and try again.";
      case "publish-failed":
        return "Failed to publish the update to Nostr relays. Please try again.";
      case "storage-error":
        return "Unable to update moderation settings. Please try again.";
      default:
        return "Unable to update moderation settings. Please try again.";
    }
  }

  describeNotificationError(code) {
    if (typeof this.describeNotificationErrorService === "function") {
      const result = this.describeNotificationErrorService(code);
      if (typeof result === "string") {
        return result;
      }
    }

    switch (code) {
      case "nostr-extension-missing":
        return "List updated, but the DM notification failed because no Nostr extension is connected.";
      case "nostr-uninitialized":
        return "List updated, but the DM notification system is still connecting to Nostr relays. Please try again in a moment.";
      case "nip04-unavailable":
        return "List updated, but your Nostr extension does not support NIP-04 encryption, so the DM notification was not sent.";
      case "sign-event-unavailable":
        return "List updated, but your Nostr extension could not sign the DM notification.";
      case "missing-actor-pubkey":
        return "List updated, but we could not determine your public key to send the DM notification.";
      case "publish-failed":
        return "List updated, but the DM notification could not be delivered to any relay.";
      case "encryption-failed":
      case "signature-failed":
        return "List updated, but the DM notification failed while preparing the encrypted message.";
      case "invalid-target":
      case "empty-message":
        return "";
      default:
        return "List updated, but the DM notification could not be sent.";
    }
  }

  async sendAdminListNotification({ listType, actorNpub, targetNpub }) {
    if (typeof this.sendAdminListNotificationService === "function") {
      return this.sendAdminListNotificationService({ listType, actorNpub, targetNpub });
    }

    const normalizedTarget = this.normalizeNpubValue(targetNpub);
    if (!normalizedTarget) {
      return { ok: false, error: "invalid-target" };
    }

    const activeHex = this.normalizeHexPubkey(this.getActivePubkey());
    if (!activeHex) {
      return { ok: false, error: "missing-actor-pubkey" };
    }

    const fallbackActor = this.safeEncodeNpub(activeHex) || "a BitVid moderator";
    const actorDisplay = this.normalizeNpubValue(actorNpub) || fallbackActor;
    const isWhitelist = listType === "whitelist";

    const introLine = isWhitelist
      ? `Great news—your npub ${normalizedTarget} has been added to the BitVid whitelist by ${actorDisplay}.`
      : `We wanted to let you know that your npub ${normalizedTarget} has been placed on the BitVid blacklist by ${actorDisplay}.`;

    const statusLine = isWhitelist
      ? `You now have full creator access across BitVid (${BITVID_WEBSITE_URL}).`
      : `This hides your channel and prevents uploads across BitVid (${BITVID_WEBSITE_URL}) for now.`;

    const followUpLine = isWhitelist
      ? "Please take a moment to review our community guidelines (https://bitvid.network/#view=community-guidelines), and reply to this DM if you have any questions."
      : "Please review our community guidelines (https://bitvid.network/#view=community-guidelines). If you believe this was a mistake, you can submit an appeal at https://bitvid.network/?modal=appeals to request reinstatement, or reply to this DM with any questions.";

    const messageBody = [
      "Hi there,",
      "",
      introLine,
      "",
      statusLine,
      "",
      followUpLine,
      "",
      "— The BitVid Team",
    ].join("\n");

    const message = `![BitVid status update](${ADMIN_DM_IMAGE_URL})\n\n${messageBody}`;

    return this.services.nostrClient.sendDirectMessage(
      normalizedTarget,
      message,
      activeHex,
    );
  }

  updateFocusTrap() {
    if (!(this.profileModal instanceof HTMLElement)) {
      this.focusableElements = [];
      return;
    }

    const selector =
      'a[href], button:not([disabled]), textarea, input, select, [tabindex]:not([tabindex="-1"])';
    const nodes = Array.from(
      this.profileModal.querySelectorAll(selector),
    );
    this.focusableElements = nodes.filter((node) => {
      if (!(node instanceof HTMLElement)) {
        return false;
      }
      const style = window.getComputedStyle(node);
      if (style.display === "none" || style.visibility === "hidden") {
        return false;
      }
      if (node.hasAttribute("disabled")) {
        return false;
      }
      if (node.getAttribute("aria-hidden") === "true") {
        return false;
      }
      return true;
    });

    this.bindFocusTrap();
  }

  bindFocusTrap() {
    if (!(this.profileModal instanceof HTMLElement)) {
      return;
    }

    if (!this.boundKeydown) {
      this.boundKeydown = (event) => {
        if (event.key === "Escape") {
          event.preventDefault();
          this.hide();
          this.callbacks.onClose(this);
          return;
        }

        if (event.key !== "Tab") {
          return;
        }

        if (!this.focusableElements.length) {
          event.preventDefault();
          if (typeof this.profileModal.focus === "function") {
            this.profileModal.focus();
          }
          return;
        }

        const first = this.focusableElements[0];
        const last = this.focusableElements[this.focusableElements.length - 1];
        const active = document.activeElement;

        if (event.shiftKey) {
          if (active === first || !this.profileModal.contains(active)) {
            event.preventDefault();
            if (typeof last?.focus === "function") {
              last.focus();
            }
          }
          return;
        }

        if (active === last) {
          event.preventDefault();
          if (typeof first?.focus === "function") {
            first.focus();
          }
        }
      };
    }

    if (!this.boundFocusIn) {
      this.boundFocusIn = (event) => {
        if (
          !this.profileModal ||
          this.profileModal.classList.contains("hidden") ||
          this.profileModal.contains(event.target)
        ) {
          return;
        }

        const target = this.focusableElements[0] || this.profileModal;
        if (typeof target?.focus === "function") {
          target.focus();
        }
      };
    }

    this.profileModal.addEventListener("keydown", this.boundKeydown);
    document.addEventListener("focusin", this.boundFocusIn);
  }

  open(pane = "account") {
    if (!(this.profileModal instanceof HTMLElement)) {
      return;
    }

    this.profileModal.classList.remove("hidden");
    this.profileModal.setAttribute("aria-hidden", "false");
    this.setGlobalModalState("profile", true);
    this.selectPane(pane);

    const focusTarget = this.focusableElements[0] || this.profileModal;
    window.requestAnimationFrame(() => {
      if (typeof focusTarget?.focus === "function") {
        focusTarget.focus();
      }
    });
  }

  hide() {
    if (!(this.profileModal instanceof HTMLElement)) {
      return;
    }

    this.profileModal.classList.add("hidden");
    this.profileModal.setAttribute("aria-hidden", "true");
    this.setGlobalModalState("profile", false);

    if (this.boundKeydown) {
      this.profileModal.removeEventListener("keydown", this.boundKeydown);
    }
    if (this.boundFocusIn) {
      document.removeEventListener("focusin", this.boundFocusIn);
    }
  }

  getSavedProfiles() {
    return this.state.getSavedProfiles();
  }

  setSavedProfiles(...args) {
    return this.state.setSavedProfiles(...args);
  }

  persistSavedProfiles(...args) {
    return this.state.persistSavedProfiles(...args);
  }

  getActivePubkey() {
    return this.state.getActivePubkey();
  }

  setActivePubkey(...args) {
    return this.state.setActivePubkey(...args);
  }

  getCachedProfileSelection() {
    return this.state.getCachedSelection();
  }

  setCachedProfileSelection(...args) {
    return this.state.setCachedSelection(...args);
  }

  getActivePane() {
    return this.state.getActivePane();
  }

  setActivePane(...args) {
    return this.state.setActivePane(...args);
  }

  isWalletBusy() {
    return Boolean(this.state.getWalletBusy());
  }

  setWalletPaneBusy(isBusy) {
    const result = this.state.setWalletBusy(Boolean(isBusy));
    if (this.panes.wallet instanceof HTMLElement) {
      this.panes.wallet.setAttribute(
        "aria-busy",
        this.isWalletBusy() ? "true" : "false",
      );
    }
    this.applyWalletControlState();
    return result;
  }
}

export default ProfileModalController;